Of course, why not? My wife was my GF for 8 years then my fiancee for 1 year and now my wife for 9 years.
And how would you know that the gal selected and approved by Ammi, Abba, Behan, Bhai etc etc, has not been test driven by somebody else to God knows what mileage.
Exactly.
LOL. bachay issi liye kehtay hein, bachpan mein hi ladki select kar kay GF bana lo, only then you can be reasonable sure of sharafat.